Executive Summary

Informations
Name CVE-2020-10995 First vendor Publication 2020-05-19
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

PowerDNS Recursor from 4.1.0 up to and including 4.3.0 does not sufficiently defend against amplification attacks. An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the resulting traffic between the recursive and other authoritative name servers. Both types of service can suffer degraded performance as an effect. This is triggered by random subdomains in the NSDNAME in NS records. PowerDNS Recursor 4.1.16, 4.2.2 and 4.3.1 contain a mitigation to limit the impact of this DNS protocol issue.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10995

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 29
Os 1
Os 2
Os 1

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
Source Url
CONFIRM https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-...
DEBIAN https://www.debian.org/security/2020/dsa-4691
MISC http://www.nxnsattack.com
SUSE http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html

Alert History

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Date Informations
2024-08-02 13:10:55
  • Multiple Updates
2024-08-02 01:20:44
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2024-02-02 02:11:52
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2024-02-01 12:19:26
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2023-11-07 21:37:22
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2023-09-05 13:06:23
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2023-09-05 01:19:05
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2023-09-02 13:05:17
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2023-09-02 01:19:22
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2023-08-12 13:09:52
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2023-08-12 01:18:36
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2023-08-11 13:03:11
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2023-08-11 01:19:14
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2023-08-06 13:01:26
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2023-08-06 01:18:28
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2023-08-04 13:01:46
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2023-08-04 01:18:44
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2023-07-14 13:01:48
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2023-07-14 01:18:36
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2023-03-29 02:04:31
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2023-03-28 12:18:52
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2022-10-11 12:55:15
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2022-10-11 01:18:31
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2022-04-27 02:06:05
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2021-08-05 01:36:27
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2021-07-21 17:23:56
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2021-05-04 13:44:34
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2021-04-22 02:56:30
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2020-06-15 00:22:39
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2020-05-26 21:23:14
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2020-05-23 21:23:16
  • Multiple Updates
2020-05-23 02:35:13
  • First insertion